General Information

Engine Control

P0605 Internal Control Module Read Only Memory (ROM) Error - General Information

Component Location





General Description

A malfunction is detected by using a checksum technique for verifying data. The digital data is composed of zeros and ones. A checksum is the total of all ones in a string of data. By comparing the checksum value with a stored value, a malfunction can be detected.

DTC Description

If the RAM in ECM has errors or CPU software version dose not accord with main CPU or real checksum does not accord with memory checksum, ECM sets P0605.

DTC Detecting Condition